16158109 has 16 divisors (see below), whose sum is σ = 18942336. Its totient is φ = 13619200.

The previous prime is 16158091. The next prime is 16158179. The reversal of 16158109 is 90185161.

It is a cyclic number.

It is not a de Polignac number, because 16158109 - 2⁹ = 16157597 is a prime.

It is a super-2 number, since 2×16158109² = 522168972911762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16158179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12669 + ... + 13885.

It is an arithmetic number, because the mean of its divisors is an integer number (1183896).

Almost surely, 2^16158109 is an apocalyptic number.

It is an amenable number.

16158109 is a deficient number, since it is larger than the sum of its proper divisors (2784227).

16158109 is a wasteful number, since it uses less digits than its factorization.

16158109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 16158109 is about 4019.7150396514. The cubic root of 16158109 is about 252.8115110942.

The spelling of 16158109 in words is "sixteen million, one hundred fifty-eight thousand, one hundred nine".